Tested with various services

ICSdroid is Open-Source Software

ICSdroid is designed to be an open-source project (GPLv3)
from the very first beginning. It is always possible to
compile the app yourself and use it for free. The
source code is available,
and you can download the app on F-Droid
(note that we're not related to F-Droid and don't have any influence on it).
However, it was and still is much work to create and maintain ICSdroid,
so we have decided to put it in commercial stores for a small fee. If you want to
support this project, please consider donating to ICSdroid or
purchasing it.